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Some quantitative characters used in the identification of Taenia hydatigena, T. ovis, T. pisiformis and T. multiceps adult worms, and T. multiceps metacestodes

Published online by Cambridge University Press:  05 June 2009

G. T. Edwards  and
I. V. Herbert
G. T. Edwards
Affiliation:
Department of Applied Zoology, University College of North Wales, Bangor Gwynedd LL57 2UW
I. V. Herbert
Affiliation:
Department of Applied Zoology, University College of North Wales, Bangor Gwynedd LL57 2UW
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Abstract

Measurements were made of gravid worm lengths, scolex diameter, rostellum diameter, sucker diameter, and large and small rostellar hooks of adult Taenia hydatigena, T. multiceps, T. ovis and T. pisiformis obtained from dogs in North Wales. Values recorded agreed closely with published values. None of these characters could be used to differentiate reliably between the species except that, of the worms examined, those with large rostellar hooks greater than 228 μim were T. pisiformis and those with large hooks less than 168 μm were T. multiceps. The range of hook lengths of the different species overlapped considerably.

Reliable identification required examination of mature proglottis morphology of specimens which were relaxed before fixation. Relaxed mature proglottides often showed a characteristic shape.

Lengths of rostellar hooks of scolices from T. multiceps coenuri followed the same frequency distribution as adult worm hooks. A strong correlation was shown between coenurus volume and the number of scolices on the coenurus membrane, with a poor correlation between coenurus age and volume.

Type
Research Article
Information
Journal of Helminthology , Volume 55 , Issue 1 , March 1981 , pp. 1 - 8
Copyright
Copyright © Cambridge University Press 1981

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References

REFERENCES

Abuladze, K.I. (1964) Taeniata of animals and man and diseases caused by them. Volume IV of ‘Essentials of Cestodology’ (edited by Skrjabin, K. I.), Academy or Sciences of the U.S.S.R. Helminthological Laboratory, Moscow. Israel Program for Scientific Transaltions, Jerusalem, 1970.Google Scholar
Beveridge, I. & Gregory, G.G. (1976) The identification of Taenia species from Australian carnivores. Australian Veterinary Journal, 52, 369–373.Google Scholar
Clapham, P.A. (1942) On identifying Multiceps spp. by measurement of the large hook. Journal of Helminthology, 20, 31–40.Google Scholar
Clapham, P.A. & Peters, B.G. (1941) The differentiation of Coenurus species by hook measurements. Journal of Helminthology, 19, 75–84.Google Scholar
Cook, B.R. (1965) The incidence and epidemiology of Echinococcus granulosus in Great Britain. Ph.D. Thesis, Liverpool University.Google Scholar
De Chaneet, G. (1972) Identification of formalin-fixed tapeworms. Australian Veterinary Journal, 48,40.CrossRefGoogle Scholar
Edwards, G.T. (1979) Epidemiological and immunological studies of Taenia multiceps and Taenia hydatigena infections in sheep, and sheep and pigs respectively. Ph.D. Thesis, University of Wales.Google Scholar
Edwards, G.T., Hackett, F. & Herbert, I.V. (1979a) Taenia hydatigena and T. multiceps infections in Snowdonia U.K. I. Farm dogs as definitive hosts. British Veterinary Journal, 135,426–432.Google Scholar
Edwards, G.T., Hackett, F. & Herbert, I.V. (1979b) Taenia hydatigena and T. multiceps infections in Snowdonia U.K. II. The role of hunting dogs and foxes as definitive hosts and of sheep as intermiedate hosts. British Veterinary Journal, 135, 433–439.CrossRefGoogle Scholar
Hackett, F. & Walters, T.M.H. (1980) The prevalence of cestodes in farm dogs in mid-Wales during 1975. Veterinary Parasitology, 7, 95–101.Google Scholar
Hsu, R.G. (1968) Use of a simple digestive fluid to clear and relax old cestode material for preparation of whole mounts. Journal of Parasitology, 54, 73.Google Scholar
Nagaty, H. F. & Ezzat, M.A.E.(1946)On the identity of Multiceps multiceps (Leskc, 1780), M. gaigeri Hall, 1916 and M. serialis (Gervalis, 1845), with a review of these and similar forms in man and animals. Proceedings of the Helminthological Society of Washington, 13, 33–44.Google Scholar
Verster, A. (1969) A taxonomic revision of the genus Taenia Linnaeus 1758, s. str. Onderstepoort Journal of Veterinary Research, 36, 3–58.Google Scholar
Williams, B.M. (1976a) The epidemiology of adult and larval (tissue) cestodes in Dyfed (U.K.) 1. The cestodes of farm dogs. Veterinary Parasitology, 1, 271–276.Google Scholar
Williams, B.M. (1976b) The epidemiology of adult and larval (tissue) cestodes in Dyfed (U.K.) 2. The cestodes of foxhounds. Veterinary Parasitology, 1, 277–280.CrossRefGoogle Scholar